Stone-working machine.



PATENTED MAY l, 1906.

J. R. PEIROE.

STONE WORKING MACHINE.

APPLICATION FILED NOV.14,1904.

3 SHBETS-SHEET 1 INVENTOR:

PATENTED MAY 1, 1906.

J. R. PEIRCE.

STONE WORKING MACHINE.

APPLICATION FILED NOV.14, 1904.

3 SHEETS-SHEET 2.

INVENTOR: M229,

i Wd No. 819,080. PATENTBD MAY 1, 1906.

J. R. PEIRCB.

STONE WORKING MACHINE.

APPLIUATION FILED 21011.14, 1904.

3 SHEETS-SHEET 3y INVENTOR:

WITNESSES; 44;@ if@ 717ml By Alim/nays,

UNITED STATES PATENTA OFFICE..

STONE-WORKING MACHINE.

Specification of Letters Patent.

Patented May 1, 1906.

Application filed NOvember 14,1904. Serial No. 232,630.

To all whom, it 12mg/ concern:

Beit known that 1, JOHN ROYDEN Parken, a citizen of the United States,residing in the borough of Manhattan, city, county, and State of N ewYork, have invented certain new and useful Improvements in Stone-Wvorliing Machines, of which the following is a specification.

This invention relates to machines for working marble or other stone andaims to provide certain improvements therein.

ln an application Afiled by me on the 10th day of October, 1904, SerialNo. 227,841, I have described a novel process of working marble or otherstone by cutting the marble with a rotating wheel of agglomerated hardcrystalline material, such as carborundum.

My present invention is directed to the production of a machine which isadapted for using` such a cutter which is so simple as to permit of itsbeing made as an attachment to an ordinary planer, which is speciallyadapted for operating upon slabs of small sizes, and in which thevarious operating parts are of simple and economical construction andcompactly arranged.

My invention in some of its Vfeatures of construction is also adaptablefor use with other cutting means than the wheel hereinbefore referredto.

1n the accompanying drawings, which illustrate the preferred form of myinvention, Figure 1 is 'a side elevation, partly in section, showing myinvention as applied to an ordinary planing-table. Fig. 2 is a plan,partly in horizontal section, on the line 2 2 in Fig. 1, theplaning-table being shown as partly broken away. Fig. 3 is an enlargedview of Fig. 2 with the planing-table removed. Fig. 4 is a verticalsection on the line 4 4 in Fig. 3, a part of the planing-table beingshown in section. Fig. 5 is a sectional view of the operating-shaft andits carrier.

Referring to the drawings, A is a longitudinally-movable bed such as isusually employed in planers and similar apparatus. It is driven by meansof a screw B, operated from a pulley C, and the direction of which isdetermined by means of a reversing-gear D, operated by means of a leverE at the central portion of the machine,where the operator stands. Thisis the usual type of longitudinally-moving bed in machines of thisgeneral class and may be replaced by any other suitable type of holderfor the stone. The cutter F (indicated in dotted lines in Fig. 4) iscarried upon an operating-shaft G, extending transversely of the bed andcarrying at its rear end a pulley H, which is belted to a driving pulleyor drum 1, arranged some distance from the machine, so as to permittransverse and vertical adjustments of the shaft G. 1t is to themechanism for supporting and adjusting the shaft G that my presentinvention principally relates. The entire mechanism is mounted in aframe J, which preferably comprises a bed-plate a, having at front andrear suitable vertical guides such guides being arranged in pairs andhaving their opposing Vfaces grooved at c to receive slideboXes d, whichsupport the carrier L for the shaft G. The shaft G may be rotativelyheld in the carrier L in any suitable manner, but I prefer to provideroller-bearings f at each end of the shaft, and thrust-collars g arepreferably arranged to prevent longitudinal movement of the shaft, asshown in Fig. 5. The carrier L is adapted to move longitudinally throughthe slides d, but is prevented from rotating therein by ribs or splinesformed on the slides which fit in corresponding grooves e formed in thecarrier. The mechanism which I have provided 'for longitudinallyadjusting the carrier L in the slides d, whereby to move the cutter F tovarying positions transversely of the bed A, comprises a rack or racks7L, arranged at the side of the carrier L, which racks are engaged bypinions i, which are of a length equal to the vertical adjustmentdesired Vfor the cutter F. By this means the pinions 'i remain inoperative connection with the racks 7L irrespective of the verticalposition of the cutter. The pinions fi may be rotated by a handwheelthrough any suitable connection. prefer, however, to provide a worm r atthe upper end of each of the pinions fi, said worms being rotated byworm-wheels Z, mounted on a common shaft m, which carries a bevelgearfn, meshing with a similar gear 0, mount- Ioo ed upon the shaft p of theadjusting-wheel y'. This mechanism Vforms a simple and convenient methodof rotating both of the pinions i at the same rate of speed and alsoprovides an ellicient lock Vfor the pinions, so that the 1o 5 carrier Land consequently the shaft G are lirmly held in their adjusted positionswithout the necessity of providing any special locking means.

My invention also provides means Vfor ver- I 1o sprocket wheel s, saidsprockets being provided with splines 1" fitting in grooves r2 of thescrews. The sprockets s are preferably connected by a chain u, so as tomove in unison, and to one of said sprockets (preferably that at thefront of the machine) is iiXed a hand-wheel fv. Upon rotation of thelatter the sprockets s act upon the screws g to raise or lower theslides d and with them the shaftcarrier L.

It will be observed that the mechanism provided by my invention may beused in combination with any suitable moving table without alteration ofthe latter and that such mechanism is extremely compact and simple inits construction, while performing all of the functions which arerequisite in a device of this character. The adj usting-wheels occupyl'iXed positions with relation to the frame and do not partake of themovements of the cutting mechanism. The device may be easily taken apartand assembled, the shaft-carrier being removable by merely moving itlengthwise out of its slides after disengagement of the racks h andpinions fi.

The worm lc holds the cutting-wheel rigidly in the desired position oflateral adjustment, and the two elongated pinions or ears i, prevent theswinging of the shaft in a orizontal lane by the pressure of the stoneas it is fed) against the cutter. Notwithstanding the ri id manner inwhich the cuttershaft is he d, the particular combination of worm-gearand elongated pinions is stationary. From this construction two specialadvantages flow: First, the bearings for the parts described being inthe fixed portions of the machine may be made very heavy and solid, and,second, the'shaft is disconnected from the mechanism for laterallyadjusting it and can be easily raised or lowered, as it carriessubstantially no weight but that of its bearings. Consequently aperfectly rigid machine of minimum weight is obtained.

I do not claim herein, broadly, a machine having a carborundum cutter asdescribed, the same being claimed in my application, Serial No. 227,842,led October l0, 1904.

Though I have described with great particularity of detail a certainembodiment of my invention, yet it is not to be understood that myinvention is limited to the specific construction disclosed. Variousmodifica- Upon the projecting Y tions thereof in detail and in theconstruction and arrangement of the parts may be made by those skilledin the art without departure from the invention.

I claim as my inventionl. In a stone-cuttingmachine, a shaft and meansfor moving it includin a rack connected to the shaft and an e ongatedgear meshing with said rack.

2. In a stone-cutting. machine, a shaft, a carrier having bearingstherefor, and means for moving said carrier comprising a rack connectedwith the latter and an elongated gear meshing with said rack.

3. In a stone-cutting machine, a shaft, and means for moving itcomprising a rack connected with said shaft, an elongated gear meshingwith said rack, a hand-operated member, and a worm and worm-wheelconnection between said member and said gear.

4. In a stone-cutting machine, a shaft, a carrier having bearingstherefor, and means for movingY said carrier comprising a pair of racksmounted on opposite sides of said carrier, a pair of elongated Gearsmeshing with said racks, worm-whees fixed upon said gears, and a shafthaving worms meshing with said worm-wheels.

5. In a stone-cutting machine, a shaft, a carrier therefor, means forlongitudinally moving said carrier comprising a rack connected therewithand an elongated gear meshing with said rack, and means for moving saidcarrier laterally comprising a screw connected to said carrier, and anoperating member engaging said screw to move it in a lengthwisedirection.

6. In a stone-cutting machinethe combination of a rapidly-rotatingcutter shaft adapted to carry a cutting-wheel of agglomerated coarsecrystalline hard material, a

IOO

frame comprising a bed-plate a and front and rear guides b a pair ofslides d moving vertically in said guides, and a shaft-carrier L movingaxially in said slides.

7. In a stone-cutting machine, a frame having front and rear guides, apair of slides moving in said guides, a shaft-carrier movinglongitudinally in said slides, a rack on said carrier, an elongated gearmeshing with said rack, an operating-shaft having bearings in saidframe, and connected with said gear to move the latter, a screwconnected with said carrier, and an operating member adapted to movesaid screw.

8. In a stone-cutting machine, the combination of slides d, carrier L,racks 7L, gears c', worm-wheels k on said gears, worms Z, transverseshaft m for said worms, bevel-gear ln, on said shaft, bevel-gear 0meshing with said gear n, and operating-shaft p.

9. In a stone-cuttin machine, the combination of slides d, carrier L,racks h, gears t', worm-wheels 7c on said gears, worms Z, trans- IIOverse shaft m for said Worms, bevel-gear n on I my name in the presenceof two subscribing Saud shaft, bevel-gear 0 meshlng Wlth szud wltnesses.

gear n, Operating-shaft p, screws q @Connected )T f- Y 4 1 to Saudshdes, sprockets s tor operatmg sald JOH ROXDDN PDIRCD screws, and chamu connectlng sald sprock- Vltnesses:

ets. DOMINGO A. USINA.

In Witness whereof I have hereunto signed THEODORE T. SNELL.

